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hammer [34]
4 years ago
11

How to factor: a^2+11a+18

Mathematics
2 answers:
Verizon [17]4 years ago
7 0
a^2+11a+18\\\\-----------------------------\\\\11=9+2\\18=9\cdot2\\\\-----------------------------\\\\a^2+11a+18=(a+9)(a+2)
ozzi4 years ago
7 0
a^2+11a+18=a^2+2a+9a+18=a(a+2)+9(a+2)=\\\\=(a+2)(a+9)
You might be interested in
Find the sum of all the numbers between 100 and 200 which are divisible by 7.​
frozen [14]

Answer:

2107

Step-by-step explanation:

In this type of question we have to follow these steps

1) Find the biggest number in interval which is divisible by seven

For this question it is 196

2)Find the smallest number in interval which is divisible by seven

For this question it is 105

3) Then subtract 105 from 196

196-105=91

4) Divide 91 by seven

91:7=13

5)Lastly we have to add 1 to the 13

13+1=14

So we found that we have 14 different numbers that divisible by seven in this interval. So next steps will be about sum of them

To find them sum we have a formula:

  (biggest number + smaller number) x number of terms / 2

      (196+105) x 14 /2  = 2107

7 0
3 years ago
If 5,142 x 679= 3,491, then 51.42 x 67.9
nirvana33 [79]

Answer:

3.491

Step-by-step explanation:

move the decimal over 3 places.

5 0
3 years ago
If 5x+15=45 what is the value of x
icang [17]

Answer:

X=6

Step-by-step explanation:

5x6=30+15

5 0
4 years ago
Read 2 more answers
Select the correct answer from the drop-down menu.
grin007 [14]

Answer:

374

Step-by-step explanation:

11/50=0.22

number/1700=0.22

so 374/1700=0.22 hope that's a choice and helps.

7 0
3 years ago
Solve the equation<br> -3x + 1 + 10x = x + 4<br> 0 x = 1/2<br> х<br> =<br> x = 12<br> X = 18
pav-90 [236]

Answer:

<h3>            x = 1/2</h3>

Step-by-step explanation:

-3x + 1 + 10x = x + 4

      -1                  -1

        7x  = x  + 3  

       -x          -x

        6x = 3

      ÷6      ÷6

         x = 1/2

8 0
3 years ago
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